Tankanoid-F2

I'm rebuilding the 'Tankanoid 4.0' engine for ease-of-use and to include some new features.
The engine will be called 'F2' engine. I will be updating this engine to the 'Tankform' engine as I try to add newer visual effects and make these available to other platforms.

The 'F2' engine will include:

• Shard code input system
• Alternate difficulty
• New tank design, extra skins
• 'Secret' game mode

The 'F2' engine will remove:

• The rank-progression system
• Black difficulty mode
• Extra skins from Tankanoid-F

I'm also recolouring some sprites to give the game a blander or darker feel, and if the new explosion effects work then I think the game will look much better.

Tankanoid-F2 will come with the engine via .zip file